If a child’s mother has been anesthetized and then breastfeeds, the harm caused can be divided into the following aspects: first, the harm is negligible. If the mother played anesthesia belongs to the local anesthetic, such as local injection of lidocaine, common in the mother in the filling, extraction and other situations, the effect of anesthetic drugs is very small, through the milk secretion of the amount of negligible, for the child’s impact can be negligible. Secondly, it causes drowsiness and even respiratory depression in children. If the anesthetics used by the parents belong to general anesthetics, it will cause drowsiness and even obvious respiratory depression after being secreted through breast milk, and other side effects.